CVE-2026-59565

Local and kernel denial-of-service

Published Aug 24, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
A remotely exploitable buffer overflow bug can cause a local and kernel denial-of-service attack on affected versions of Zscaler Client Connector on Windows.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Zscaler
Zscaler client Connector
Vendors & Products Zscaler
Zscaler client Connector
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A remotely exploitable buffer overflow bug can cause a local and kernel denial-of-service attack on affected versions of Zscaler Client Connector on Windows.
Title Local and kernel denial-of-service
Weaknesses CWE-229
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Zscaler
Published
Updated
Aug 24, 2026, 3:18 PM
Reserved
Jul 6, 2026, 6:18 AM
Status
Awaiting Analysis
Published
Aug 24, 2026, 2:16 PM
Modified
Oct 12, 2026, 3:10 PM